NASA
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NASA photo shows sun looking like a jack-o'-lantern just in time for Halloween
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NASA preps for rare encounter with Siding Spring comet
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Alyssa Carson - the first human to walk on Mars? 13-year old girl sure hopes so
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NASA, what's in a name? Agency sends 'boarding passes' to space
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Alyssa Carson is 13, dreams big and acts bigger: First human on Mars?
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Can't fly to Mars? Send your name into space with a little help from NASA
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NASA awards funding for expanding the search for alien life
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ISS astronauts take a stroll in space to stow away broken ammonia pump
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NASA invests $50 million in 7 astrobiology research groups to answer all-important question: Are we alone in the universe?
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India's Mars Orbiter Mission sends back its first 3D images of Mars
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NASA selects astrobiologists to study life origins and extraterrestrial possibilities
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Earth’s oceans: What’s warming, what’s not, and why
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